CN112295056A - Infusion pump blocking pressure detection method, device, equipment and medium - Google Patents
Infusion pump blocking pressure detection method, device, equipment and medium Download PDFInfo
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- CN112295056A CN112295056A CN202011046628.7A CN202011046628A CN112295056A CN 112295056 A CN112295056 A CN 112295056A CN 202011046628 A CN202011046628 A CN 202011046628A CN 112295056 A CN112295056 A CN 112295056A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M5/16854—Monitoring, detecting, signalling or eliminating infusion flow anomalies by monitoring line pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M2005/16863—Occlusion detection
Abstract
The invention discloses a method for detecting the blocking pressure of an infusion pump, which comprises the following steps: after the infusion pump is started, a first sensing pressure detected by a pressure sensor at a first time and a second sensing pressure detected at a second time different from the first time are obtained. And calculating a function coefficient of the pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment. And acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure. The method comprises the steps of obtaining current sensing pressure detected by a pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to a target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure. When the blocking pressure is calculated, the accurately obtained infusion tube pressure is eliminated, so that the blocking pressure detection precision of the product is finally improved. In addition, a clogging pressure detecting apparatus, a device and a storage medium are proposed.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a method, a device, equipment and a medium for detecting blocking pressure of an infusion pump.
Background
At present, the detection of the blocking pressure of the infusion pump in the market adopts a difference method to remove the pressure of the infusion tube, so that the pressure intensity (namely the blocking pressure) of liquid in the infusion tube is accurately obtained. However, some of the conventional processes for the initial value take a fixed value, and some of the conventional processes continuously take the minimum value. Meanwhile, various common infusion tubes in the market at present, including PVC (Polyvinyl chloride) tubes and the like, have the same stress relaxation phenomenon (i.e., the phenomenon that the total deformation of the infusion tube is kept unchanged, the plastic deformation is continuously increased due to creep deformation, the elastic deformation is correspondingly reduced, and the stress is gradually reduced along with time). Due to the characteristics of the polymer material of the infusion tube, the pressure value of the infusion tube is continuously reduced, and therefore, the effect of calculating the occlusion pressure by taking a fixed value is poor. However, if the minimum value of the pressure in the infusion tube is continuously obtained, the minimum value is difficult to accurately obtain.
Disclosure of Invention
In view of the above, there is a need to provide an infusion pump occlusion pressure detection method, apparatus, device and medium that accurately eliminates infusion line pressure.
The utility model provides a method for infusion pump blocking pressure detection, is applied to the infusion system, the infusion system includes interconnect's infusion pump and transfer line, the outer wall department of transfer line installs pressure sensor, pressure sensor is used for detecting the sensing pressure, the method includes:
after detecting that the infusion pump is started, acquiring a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment;
calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments;
acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure;
taking the moment when the real-time sensing pressure is detected to be increased as a target moment, and taking the pressure function of the target moment as a target pressure function of the infusion tube;
and acquiring the current sensing pressure detected by the pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to the target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
In one embodiment, the acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure includes:
acquiring real-time sensing pressure detected by the pressure sensor at preset time intervals after the second moment;
updating the pressure function based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
In one embodiment, the updating the pressure function according to the real-time sensed pressure and any previous sensed pressure before the real-time sensed pressure includes:
and updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment.
In one embodiment, the acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure includes:
setting a real-time sensing pressure threshold value; wherein the real-time sensed pressure threshold is less than the second sensed pressure;
and acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment when the real-time sensing pressure is equal to the real-time sensing pressure threshold.
In one embodiment, the difference between the second sensed pressure and the real-time sensed pressure threshold is a first difference;
after the updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first time, the method further includes:
and acquiring a differential pressure threshold value smaller than a first differential value of the real-time sensing pressure threshold value, and taking the differential pressure threshold value as the real-time sensing pressure threshold value.
In one embodiment, the acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure further includes:
taking a real-time sensing pressure threshold value set at a preset time as a result of the pressure function at the preset time and after the infusion pump is started; and the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset time.
In one embodiment, after said calculating a current occlusion pressure based on said current sensed pressure and said current infusion tube pressure, further comprising:
the utility model provides an obstruction pressure detection device, is applied to the infusion system, the infusion system includes interconnect's transfer pump and transfer line, pressure sensor is installed to the outer wall department of transfer line, pressure sensor is used for detecting the sensing pressure, the device includes:
the pressure detection module is used for acquiring a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment after detecting that the infusion pump is started;
the function coefficient calculation module is used for calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments;
the function updating module is used for acquiring real-time sensing pressure detected by the pressure sensor in real time and updating the pressure function according to the real-time sensing pressure;
the occlusion pressure calculation module is used for taking the moment when the real-time sensing pressure is detected to be increased as a target moment and taking the pressure function of the target moment as a target pressure function of the infusion tube; and acquiring the current sensing pressure detected by the pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to the target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
A computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of:
after detecting that the infusion pump is started, acquiring a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment;
calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments;
acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure;
taking the moment when the real-time sensing pressure is detected to be increased as a target moment, and taking the pressure function of the target moment as a target pressure function of the infusion tube;
and acquiring the current sensing pressure detected by the pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to the target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
An occlusion pressure detection device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of:
after detecting that the infusion pump is started, acquiring a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment;
calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments;
acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure;
taking the moment when the real-time sensing pressure is detected to be increased as a target moment, and taking the pressure function of the target moment as a target pressure function of the infusion tube;
and acquiring the current sensing pressure detected by the pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to the target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
The invention provides a method, a device, equipment and a medium for detecting the blocking pressure of an infusion pump. And when the blocking pressure is calculated, the accurately obtained infusion tube pressure is eliminated, so that the blocking pressure detection precision of the product is finally improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a schematic flow chart of a method for detecting occlusion pressure of an infusion pump in one embodiment;
FIG. 2 is a graphical representation of a pressure function curve in one embodiment;
FIG. 3 is a schematic diagram of the configuration of a blockage pressure detection device in one embodiment;
fig. 4 is a block diagram showing the structure of a clogging pressure detecting apparatus in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 1 is a schematic flow chart of a method for detecting an occlusion pressure of an infusion pump in an embodiment, the method for detecting an occlusion pressure of an infusion pump is applied to an infusion system, the infusion system includes an infusion pump and an infusion tube connected to each other, and a pressure sensor is installed on an outer wall of the infusion tube. The pressure sensor is used to detect the sensing pressure F. For accurately calculating the occlusion pressure delta F, the interference F of the infusion tube pressure on the calculation of the occlusion pressure needs to be considered0I.e. Δ F ═ F-F0. The exact calculation of occlusion pressure is based on a pressure function that accurately calculates the pressure in the infusion line.
The method for detecting the blocking pressure of the infusion pump in the embodiment comprises the following steps:
It has been found through a number of experimental studies that the pressure decay function of the infusion line is shown in fig. 2 and that the pressure decay function follows substantially the following equation:
F0＝a×tb
where a and b are the two coefficients required for the pressure decay function used to calculate the line pressure at different times in the infusion line. And in addition can be understoodWhen the liquid in the infusion tube flows normally (when no occlusion exists), Δ F is 0. That is, F-F is satisfied without clogging the infusion tube0For example, for a period of time after detecting the start of the infusion pump. For determining the pressure decay function, i.e. the two coefficients, the pressure sensor is therefore determined at a first time t1The detected first sensing pressure F1And at a second time t2The detected second sensing pressure F2. Illustratively, the first time t1Is the 2 nd s after the infusion pump is started, and the second time is the 10 th s after the infusion pump is started.
And 104, calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment.
The two coefficients a and b are subjected to merging transformation to obtain:
the acquired pressure sensor is arranged at a first time t1The detected first sensing pressure F1And at a second time t2The detected second sensing pressure F2The coefficients a and b can be obtained by substituting the above equations.
And 106, acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure.
As shown in fig. 2, where curve 1 is the actual pressure curve of the infusion line. While curves 2-5 are fitted pressure curves for the infusion line, i.e. pressure curves when coefficients a and b take different values. It can be seen in fig. 2 that the fitted pressure curves 3-5 are closer than the actual pressure curve 1 when the time t is smaller, whereas the fitted pressure curve 2 is closer than the actual pressure curve 1 as the time t increases. The setting of the coefficients a and b therefore determines the accuracy of the result, and the significance of step 106 is that the calculated fitted pressure curve is always closer to the actual pressure curve by continuously modifying the coefficients a and b.
In one embodiment, the basis is updated as a function of time interval. Specifically, the real-time sensing pressure detected by the pressure sensor is acquired at preset time intervals after the second moment. Illustratively, the real-time sensed pressure detected by the pressure sensor is acquired every 30s or 60 s. Further, the pressure function is updated based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure. For example, the real-time sensed pressure is at t4Detected at the moment and having a value of F4. The optional prior sensed pressure may be at t3Detected at the moment and having a value of F3(ii) a Or at t2Detected at the moment and having a value of F2. The real-time sensed pressure, any previous sensed pressure and the corresponding time are substituted into the formula in step 104, so that the coefficients a and b can be updated, and the pressure function can be updated. In one embodiment, only the first sensed pressure at the first time and the real-time sensed pressure are selected to update the pressure function, because it is experimentally determined that the fit pressure function updated based on the first sensed pressure at the first time is closer to the actual pressure function than if other prior sensed pressures were selected.
In one embodiment, the basis is updated as a function of the pressure interval. Specifically, a real-time sensing pressure threshold value F smaller than the second sensing pressure is setn. The real-time sensing pressure threshold value FnIs an alert value of the change in sensed pressure, when the sensed pressure decreases from the second sensed pressure to the real-time sensed pressure threshold FnAnd the change of the infusion tube pressure is large enough to be required to update the fitting pressure function. Therefore, the real-time sensing pressure detected by the pressure sensor is obtained in real time, and when the real-time sensing pressure is equal to the real-time sensing pressure threshold value FnAccording to real-time sensed pressure FnThe pressure function is updated with the corresponding time instant, the first sensed pressure at the first time instant.
More specifically, in one embodiment, the basis is updated as a function of the isobaric intervals. Setting the second sensing pressure F2And the third momentt3Real-time sensing of pressure threshold F3Is a first difference FD. And at a third time t3According to the real-time sensing pressure threshold value F3And a first time t1The detected first sensing pressure F1Besides updating the pressure function, the pressure function is required to obtain a pressure threshold F smaller than the real-time sensing pressure3First difference FDDifferential pressure threshold value F4And applying the differential pressure threshold value F4The real-time sensing pressure threshold value is used as a real-time sensing pressure threshold value, so that the real-time sensing pressure threshold value is updated. It will be appreciated that there is also a subsequent passage of F through equal pressure intervals5、F6And updating the real-time sensing pressure threshold in real time, so as to ensure that the fitting pressure curve is always closer to the actual pressure curve.
In one embodiment, referring to fig. 2, the pressure in the infusion tube after a predetermined time substantially levels off in view of the gradual decrease in the pressure in the infusion tube per unit time with increasing time. Therefore, the real-time sensing pressure threshold value set at the preset time is used as a result of the pressure function, namely a certain value, at the preset time after the infusion pump is started and after the infusion pump is started. In this embodiment, the time difference between the preset time and the start of the infusion pump is greater than or equal to a preset time period, for example, the preset time period is 30 minutes.
And step 108, taking the moment when the real-time sensing pressure is detected to be increased as a target moment, and taking the pressure function of the target moment as a target pressure function of the infusion tube.
When the increase of the real-time sensing pressure is detected, the blockage in the infusion tube is indicated, the updating of the pressure function is stopped at the moment, and the pressure function at the target moment is taken as a target pressure function for the subsequent calculation of the blockage pressure and is marked as Finitial＝a×tbAnd the coefficients a and b in the target pressure function are constant values. It will be appreciated that the target pressure function is a fitted pressure function calculated in this embodiment that is closest to the actual pressure function.
And step 110, acquiring the current sensing pressure detected by the pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to the target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
In this embodiment, the obtained current sensing pressure is denoted as FrealtimeThe calculated current occlusion pressure is denoted as F. Then the equation F is satisfiedrealtime-Finitial。
Further, as the current occlusion pressure F increases, there is a risk of a complete occlusion in the infusion line, which may further lead to the occurrence of a burst or other risk in the infusion line. Therefore, in one embodiment, a pressure alarm threshold is set, and when the current occlusion pressure is greater than or equal to the preset pressure alarm threshold, an occlusion alarm signal is sent out, so as to avoid the occurrence of the risk of complete occlusion.
According to the method for detecting the blocking pressure of the infusion pump, the pressure of the infusion tube can be accurately obtained by fitting the attenuation curve of the infusion tube in real time. And when the blocking pressure is calculated, the accurately obtained infusion tube pressure is eliminated, so that the blocking pressure detection precision of the product is finally improved.
In one embodiment, as shown in fig. 3, an occlusion pressure detecting device is provided for an infusion system, the infusion system including an infusion pump and an infusion tube connected to each other, a pressure sensor mounted at an outer wall of the infusion tube, the pressure sensor being configured to detect a sensed pressure, the device comprising:
the pressure detection module 302 is configured to, after detecting that the infusion pump is started, obtain a first sensing pressure detected by the pressure sensor at a first time and a second sensing pressure detected at a second time different from the first time;
a function coefficient calculation module 304, which calculates a function coefficient of the pressure function of the infusion tube according to the first sensing pressure at the first time and the second sensing pressure at the second time; the pressure function is used for calculating the pressure of the infusion tube at different moments;
the function updating module 306 is used for acquiring real-time sensing pressure detected by the pressure sensor in real time and updating the pressure function according to the real-time sensing pressure;
the occlusion pressure calculation module 308 is configured to use a time when the real-time sensing pressure increase is detected as a target time, and use a pressure function at the target time as a target pressure function of the infusion tube; the method comprises the steps of obtaining current sensing pressure detected by a pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to a target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
According to the blockage pressure detection device and the blockage pressure detection method for the infusion pump, the pressure of the infusion tube can be accurately obtained by fitting the attenuation curve of the infusion tube in real time. And when the blocking pressure is calculated, the accurately obtained infusion tube pressure is eliminated, so that the blocking pressure detection precision of the product is finally improved.
In one implementation, the function update module 306 is further specifically configured to: acquiring real-time sensing pressure detected by the pressure sensor at preset time intervals after the second moment; the pressure function is updated based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
In one implementation, the function update module 306 is further specifically configured to: and updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment.
In one implementation, the function update module 306 is further specifically configured to: setting a real-time sensing pressure threshold value; wherein the real-time sensed pressure threshold is less than the second sensed pressure; the method comprises the steps of acquiring real-time sensing pressure detected by a pressure sensor in real time, and updating a pressure function according to the real-time sensing pressure and first sensing pressure at a first moment when the real-time sensing pressure is equal to a real-time sensing pressure threshold value.
In one implementation, the difference between the second sensed pressure and the real-time sensed pressure threshold is a first difference; the function updating module 306 is further specifically configured to: and acquiring a differential pressure threshold value smaller than the first differential value of the real-time sensing pressure threshold value, and taking the differential pressure threshold value as the real-time sensing pressure threshold value.
In one implementation, the function update module 306 is further specifically configured to: at the preset time after the infusion pump is started and after the infusion pump is started, taking the real-time sensing pressure threshold set at the preset time as a result of a pressure function; and the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset time.
In one implementation, occlusion pressure detection further comprises: and the alarm module is used for sending out a blocking alarm signal when the current blocking pressure is greater than or equal to a preset pressure alarm threshold value.
Fig. 4 shows an internal structural view of a clogging pressure detecting apparatus in one embodiment. As shown in fig. 4, the occlusion pressure detecting device includes a processor, a memory, and a network interface connected by a system bus. Wherein the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the occlusion pressure detection device stores an operating system and may also store a computer program that, when executed by the processor, causes the processor to implement the infusion pump occlusion pressure detection method. The internal memory may also have stored therein a computer program that, when executed by the processor, causes the processor to perform a method of detecting an occlusion pressure in an infusion pump. It will be understood by those skilled in the art that the configuration shown in fig. 4 is a block diagram of only a portion of the configuration associated with the present application and does not constitute a limitation on the occlusion pressure detection device to which the present application is applied, and a particular occlusion pressure detection device may include more or less components than those shown in the drawings, or combine certain components, or have a different arrangement of components.
An occlusion pressure detection device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the following steps when executing the computer program: after detecting that the infusion pump is started, acquiring a first sensing pressure detected by a pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment; calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments; acquiring real-time sensing pressure detected by a pressure sensor in real time, and updating a pressure function according to the real-time sensing pressure; taking the moment when the increase of the real-time sensing pressure is detected as a target moment, and taking a pressure function of the target moment as a target pressure function of the infusion tube; the method comprises the steps of obtaining current sensing pressure detected by a pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to a target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
In one embodiment, the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, and the method includes: acquiring real-time sensing pressure detected by the pressure sensor at preset time intervals after the second moment; the pressure function is updated based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
In one embodiment, updating the pressure function based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure comprises: and updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment.
In one embodiment, the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, and the method includes: setting a real-time sensing pressure threshold value; wherein the real-time sensed pressure threshold is less than the second sensed pressure; the method comprises the steps of acquiring real-time sensing pressure detected by a pressure sensor in real time, and updating a pressure function according to the real-time sensing pressure and first sensing pressure at a first moment when the real-time sensing pressure is equal to a real-time sensing pressure threshold value.
In one embodiment, the difference between the second sensed pressure and the real-time sensed pressure threshold is a first difference; after updating the pressure function according to the real-time sensed pressure and the first sensed pressure at the first time, the method further includes: and acquiring a differential pressure threshold value smaller than the first differential value of the real-time sensing pressure threshold value, and taking the differential pressure threshold value as the real-time sensing pressure threshold value.
In one embodiment, the real-time sensing pressure detected by the pressure sensor is obtained in real time, and the pressure function is updated according to the real-time sensing pressure, further comprising: at the preset time after the infusion pump is started and after the infusion pump is started, taking the real-time sensing pressure threshold set at the preset time as a result of a pressure function; and the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset time.
In one embodiment, after calculating the current occlusion pressure based on the current sensed pressure and the current infusion tube pressure, further comprising: and when the current blocking pressure is greater than or equal to the preset pressure alarm threshold value, sending a blocking alarm signal.
A computer-readable storage medium storing a computer program which, when executed by a processor, performs the steps of: after detecting that the infusion pump is started, acquiring a first sensing pressure detected by a pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment; calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments; acquiring real-time sensing pressure detected by a pressure sensor in real time, and updating a pressure function according to the real-time sensing pressure; taking the moment when the increase of the real-time sensing pressure is detected as a target moment, and taking a pressure function of the target moment as a target pressure function of the infusion tube; the method comprises the steps of obtaining current sensing pressure detected by a pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to a target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
In one embodiment, the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, and the method includes: acquiring real-time sensing pressure detected by the pressure sensor at preset time intervals after the second moment; the pressure function is updated based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
In one embodiment, updating the pressure function based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure comprises: and updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment.
In one embodiment, the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, and the method includes: setting a real-time sensing pressure threshold value; wherein the real-time sensed pressure threshold is less than the second sensed pressure; the method comprises the steps of acquiring real-time sensing pressure detected by a pressure sensor in real time, and updating a pressure function according to the real-time sensing pressure and first sensing pressure at a first moment when the real-time sensing pressure is equal to a real-time sensing pressure threshold value.
In one embodiment, the difference between the second sensed pressure and the real-time sensed pressure threshold is a first difference; after updating the pressure function according to the real-time sensed pressure and the first sensed pressure at the first time, the method further includes: and acquiring a differential pressure threshold value smaller than the first differential value of the real-time sensing pressure threshold value, and taking the differential pressure threshold value as the real-time sensing pressure threshold value.
In one embodiment, the real-time sensing pressure detected by the pressure sensor is obtained in real time, and the pressure function is updated according to the real-time sensing pressure, further comprising: at the preset time after the infusion pump is started and after the infusion pump is started, taking the real-time sensing pressure threshold set at the preset time as a result of a pressure function; and the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset time.
In one embodiment, after calculating the current occlusion pressure based on the current sensed pressure and the current infusion tube pressure, further comprising: and when the current blocking pressure is greater than or equal to the preset pressure alarm threshold value, sending a blocking alarm signal.
It should be noted that the method, the apparatus, the device and the computer readable storage medium for detecting the blocking pressure of the infusion pump belong to a general inventive concept, and the contents in the embodiments of the method, the apparatus, the device and the computer readable storage medium for detecting the blocking pressure of the infusion pump are mutually applicable.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The method for detecting the blocking pressure of the infusion pump is characterized by being applied to an infusion system, wherein the infusion system comprises the infusion pump and an infusion tube which are connected with each other, a pressure sensor is installed at the outer wall of the infusion tube and is used for detecting sensing pressure, and the method comprises the following steps:
after detecting that the infusion pump is started, acquiring a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment;
calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments;
acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure;
taking the moment when the real-time sensing pressure is detected to be increased as a target moment, and taking the pressure function of the target moment as a target pressure function of the infusion tube;
and acquiring the current sensing pressure detected by the pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to the target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
2. The method of claim 1, wherein said obtaining real-time sensed pressures detected by said pressure sensor in real-time, and updating said pressure function based on said real-time sensed pressures comprises:
acquiring real-time sensing pressure detected by the pressure sensor at preset time intervals after the second moment;
updating the pressure function based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
3. The method of claim 2, wherein said updating the pressure function based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure comprises:
and updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment.
4. The method of claim 1, wherein said obtaining real-time sensed pressures detected by said pressure sensor in real-time, and updating said pressure function based on said real-time sensed pressures comprises:
setting a real-time sensing pressure threshold value; wherein the real-time sensed pressure threshold is less than the second sensed pressure;
and acquiring real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment when the real-time sensing pressure is equal to the real-time sensing pressure threshold.
5. The method of claim 4, wherein the difference between the second sensed pressure and the real-time sensed pressure threshold is a first difference;
after the updating the pressure function according to the real-time sensing pressure and the first sensing pressure at the first time, the method further includes:
and acquiring a differential pressure threshold value smaller than a first differential value of the real-time sensing pressure threshold value, and taking the differential pressure threshold value as the real-time sensing pressure threshold value.
6. The method of claim 4, wherein said obtaining real-time sensed pressure detected by said pressure sensor in real-time, and updating said pressure function based on said real-time sensed pressure, further comprises:
taking a real-time sensing pressure threshold value set at a preset time as a result of the pressure function at the preset time and after the infusion pump is started; and the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset time.
7. The method of claim 1, further comprising, after said calculating a current occlusion pressure from said current sensed pressure and said current infusion line pressure:
and when the current blocking pressure is greater than or equal to a preset pressure alarm threshold value, sending a blocking alarm signal.
8. The utility model provides an obstruction pressure detection device which characterized in that is applied to the infusion system, the infusion system includes interconnect's transfer pump and transfer line, pressure sensor is installed to the outer wall department of transfer line, pressure sensor is used for detecting sensing pressure, the device includes:
the pressure detection module is used for acquiring a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment after detecting that the infusion pump is started;
the function coefficient calculation module is used for calculating a function coefficient of a pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; the pressure function is used for calculating the pressure of the infusion tube at different moments;
the function updating module is used for acquiring real-time sensing pressure detected by the pressure sensor in real time and updating the pressure function according to the real-time sensing pressure;
the occlusion pressure calculation module is used for taking the moment when the real-time sensing pressure is detected to be increased as a target moment and taking the pressure function of the target moment as a target pressure function of the infusion tube; and acquiring the current sensing pressure detected by the pressure sensor at the current moment, calculating the current infusion tube pressure at the current moment according to the target pressure function, and calculating the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
9. A computer-readable storage medium, storing a computer program which, when executed by a processor, causes the processor to carry out the steps of the method according to any one of claims 1 to 7.
10. An occlusion pressure detection device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to carry out the steps of the method according to any of claims 1 to 7.
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